Dario Sassi
2c6ebdadca
- correzioni, migliorie e d estensioni alle superfici di Bezier - in Release cambiate opzioni di ottimizzazione da /Ox a /O2.
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
//----------------------------------------------------------------------------
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// EgalTech 2020-2020
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//----------------------------------------------------------------------------
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// File : deCasteljau.h Data : 29.03.20 Versione : 2.2c3
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// Contenuto : Applicazioni dell'algoritmo di de Casteljau.
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//
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//
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//
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// Modifiche : 29.03.20 DS Creazione modulo.
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//
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//
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//----------------------------------------------------------------------------
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#pragma once
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//--------------------------- Include ----------------------------------------
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#include "/EgtDev/Include/EGkGeoCollection.h"
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//----------------------------------------------------------------------------
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inline bool
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deCastTrimStart( double dPar, int nDeg, PNTVECTOR& vPtCtrl)
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{
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if ( dPar < EPS_PARAM)
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return true ;
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if ( dPar > 1 - EPS_PARAM)
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return false ;
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for ( int k = 1 ; k <= nDeg ; ++ k) {
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for ( int i = 0 ; i <= nDeg - k ; ++ i) {
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vPtCtrl[i] = ( 1 - dPar) * vPtCtrl[i] + dPar * vPtCtrl[i+1] ;
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}
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}
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return true ;
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}
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//----------------------------------------------------------------------------
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inline bool
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deCastRatTrimStart( double dPar, int nDeg, PNTVECTOR& vPtCtrl, DBLVECTOR& vWeCtrl)
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{
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if ( dPar < EPS_PARAM)
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return true ;
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if ( dPar > 1 - EPS_PARAM)
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return false ;
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for ( int k = 1 ; k <= nDeg ; ++ k) {
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for ( int i = 0 ; i <= nDeg - k ; ++ i) {
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vPtCtrl[i] = ( 1 - dPar) * vWeCtrl[i] * vPtCtrl[i] + dPar * vWeCtrl[i+1] * vPtCtrl[i+1] ;
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vWeCtrl[i] = ( 1 - dPar) * vWeCtrl[i] + dPar * vWeCtrl[i+1] ;
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vPtCtrl[i] = vPtCtrl[i] * ( 1 / vWeCtrl[i]) ;
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}
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}
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return true ;
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}
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//----------------------------------------------------------------------------
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inline bool
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deCastTrimEnd( double dPar, int nDeg, PNTVECTOR& vPtCtrl)
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{
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if ( dPar < EPS_PARAM)
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return false ;
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if ( dPar > 1 - EPS_PARAM)
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return true ;
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for ( int k = 1 ; k <= nDeg ; ++ k) {
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for ( int i = nDeg ; i >= k ; -- i) {
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vPtCtrl[i] = ( 1 - dPar) * vPtCtrl[i-1] + dPar * vPtCtrl[ i] ;
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}
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}
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return true ;
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}
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//----------------------------------------------------------------------------
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inline bool
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deCastRatTrimEnd( double dPar, int nDeg, PNTVECTOR& vPtCtrl, DBLVECTOR& vWeCtrl)
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{
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if ( dPar < EPS_PARAM)
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return false ;
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if ( dPar > 1 - EPS_PARAM)
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return true ;
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for ( int k = 1 ; k <= nDeg ; ++ k) {
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for ( int i = nDeg ; i >= k ; -- i) {
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vPtCtrl[i] = ( 1 - dPar) * vWeCtrl[i-1] * vPtCtrl[i-1] + dPar * vWeCtrl[ i] * vPtCtrl[ i] ;
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vWeCtrl[i] = ( 1 - dPar) * vWeCtrl[i-1] + dPar * vWeCtrl[ i] ;
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vPtCtrl[i] = vPtCtrl[i] * ( 1 / vWeCtrl[i]) ;
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}
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}
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return true ;
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}
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